内蒙古大兴安岭河源林场地区1:5万矿产地球化学普查方法试验

METHOD TRIAL ON 1: 50000 GEOCHEMICAL RECONNAISSANCE SURVEY IN HEYUAN FOREST REGIONS OF DAXINGANLING MOUNTAINS, INNER MONGOLIA

摘要: 内蒙古大兴安岭河源林场地区属典型的森林沼泽覆盖区,应采用土壤测量开展1:5万地球化学普查工作.通过方法试验确定土壤测量采样密度为4~12点/km²,采样粒度为-4~+80目,采样层位为残积层.经工作获得较为满意的异常圈定效果,发现了找矿线索.

Abstract: The Heyuan region of Daxinganling Mountains in Inner Mongolia is covered by forest and marsh, where the 1:50000 geochemical reconnaissance work should be done by ways of soil survey. The method trial has defined the sampling density for soil survey as 4-12 spot/km². The grain size for samples is in the range of 4 to 80 per inch.The eluvium is the favorable layer for sampling. The result of anomaly delineation by this method is satisfied. And certain mineralization clues have been found.